Process of repairing the linings of rotary cement-kilns.



B. MORRISON & G- H. LOSELLE. PROCESS OF REPAIRING THE L ININGS OF ROTARYCEMENT KILNS. APPLICATION FILED SEPT. 12, 1910.

986,741 Patented Mar. 14, 1911.

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BENJAMIN MORRISON AND GEORGE H. LOSELLE, 'OF WYANDOTTE, MICHIGAN.

PROCESS OF REPAIRING THE LININGS F ROTARY GEMENT-KILNS.

Specification of Letters Patent.

Patented Mar. 14, 1911.

Application filed September 12, 1910. Serial No. 5813689.

To all whom it may concern:

Be itknown that we, BENJAMIN MORRISON and GEORGE I-I. LOsELLE, citizensof the United States of America, residing at Wyandotte, in the county oflVayne and State of Michigan, have invented certain new and usefulImprovements in Processes-for Repairing, Patching of L'inings, orCoating of Linings of Rotary Cement-Kilns, of which the following is aspecification, reference being had the-rein ,to the accompanying intothe furnace while in operation, of material adapted to become fusibleand in its application in the manner more fully described hereinafterand shown in connection with the accompanying drawing in which,

Figure 1 is a vertical central lon i'tudinal section of the rotaryfurnace cylin' er of a cement or lime kiln; and Fig.2 isa detachedsectional elevation of an appliance which may be used in; connectionwith carrying out our process." a.

' In the drawings which illustrate the man ner in which our invention isto be practiced when it is desired to repair a portion of the innerlining, A represents the inclined rotary furnacecylinder of a cement orlime kiln of conventional type. B is the inner lining.

thereof, C the hopper through which the material is fed into the furnacechamber and D is the supply pipe through which the fuel is introducedinto the furnace chamber.

At the point E of the inner lining of the cylinder the lining issupposed to have worn away forming an annular depression whichinterferes with the further operation.

In applying our process we introduce fusible material into' the cylindereither alone or in admixture with the raw material as introduced in theusual operation of the kiln. Fusible material of various kind may beused for the purpose such as, slag from furnaces or smelters, but as theeasiest material to be had and which is commonly at hand we use coalcinders of which we have made satisfactory use. In connectionwithintroducing the fusible material we also concentrate the heat of theflame used to burn the cement in such manner and place that it will meltthe fusible material in advance of the break in the lining and at thesame time'keepthe temperatureat the break below that of the moltenmaterial thereby allowing it to cool while filling the depression' andcollect and harden therein. This concentration of the heat may bereadily produced by extending the pipe G the necessary length to carrythe flame beyond the break in the lining and this may be easilyaccomplished without interrupting the operation by introducing a pipeextension as F carried on a suitable support J through the sight orother opening H at the front end of the kiln and slipping it over themouth of the fuel pipe. By providing this pipe extension at its forwardend with suitable means such as a deflecting cone I the heat may bereadily concentrated at the particular place required. In this manner alarge break at any place in the furnace may be repaired in a few hourstime without shutting down and losing a large output,

as therepairing with masonry work, necessitating the shuttingdown, wouldinvolve. The whole inn-er lining of masonry may thus be graduallyreplaced by a new lining of the character described or with a coatcovering the defective spots and breaks in the original lining, all ofwhich will readily appear from the above described appliation of ourprocess.

What we claim asour invention is 1. The herein described process oflining, relining or repairing, patching or coating the lining of theinclined rotary furnace cyl inder of cement or lime'kilns, whichconsists in the introduction while in operation of fusible material, andin fusing such material and allowing it to collect and harden at thepoint where it-is wanted by concentrating the heat or flame used forburning or calcining upon such material at a point in advance thereof. 1j,

2. The herein described process of lining, relining or repairing,patching or coating the lining of the inclined rotary furnace cylinderof cement or lime kilns, which consists in the introduction while inoperation of coal cinders, and in fusing such material and allowing itto collect and harden at the 'cement or lilnekilns, which consists inthe point where it is Wanted by concentrating to collect and harden atthe point where it is the, heat or flame used for burning or ca1--Wanted by concentrating the heat or flame cining upon such material at apoint in adused for lining or calcining upon such mixvance thereof. tureat 'a oint in advance thereof.

3. The herein described process of lining In testimony whereof we aflixour signaor repairing, patching or coating the lining tures in presenceof. two Witnesses. of the inclined rotary furnace cylinder of BENJAMINMORRISON.

. GEORGE H. LOSELLE.

WVitnesses C. R. STICKNEY,

A. M. SHANNON.

introduction while in operation of coal cinders in admixture with theraw material, and in fusing such mixture and allowlng it

